Damper-securing- device



March 30,1926. 1,578,661

v J. HRUSOVSKY DAMPER SECURING DEVICVIE Filed Au ust 14 1925 INVENTOR.

BY m finals/E? 1 'devicefor securing a damper in adjusted I l atented lVlan 30, I

- ATENT-5O FF I ,firorm HRUsovsxY, or NEWARK, NEW JERSEY.

nAMrnn-sncUniNG-nnvmn .Application filed August 14, 1525. s ei arno. 50 ,178. I I

Toall w ho' m z't may concern:

Be it known that JOHN. HRUsovsKY, citizen of Czechoslovakia, 'residing at Neav'ark,;in the county ofEsseX andSt-ateof New Jersey, has invented certain newand useful Improvements in Damper S'ecuring Devices, of which the following is a specification. V

This invention relates to an improved positions in a flue or pipe, the devicebeing applicable to any ordinary damper but par- I .ticularly adapted for use on a damper which i must withstand currents of considerable pressure or velocity. up

The inventionis illustrated in the accompanying drawing in which Figure 1 is a side view of the device with a flue wall and part of the bracket in section. I Figure 2 is a I face view of the device shown in Figure 1 and Figure 3 is adetail view of the lever or clamp of the device in its'unlocked position. f

In the drawings the wall of the flue is in 'dicated at 10 and-thedamper is shown at.11,

the shaft 12". of the damper extending through thewa'll of .the flue. ,Secured to the -,wall of'the' flueis abraclketiwhich com prises a ringi-sl iaped part -'13 which is prefv erably mad'e'of sti'fi sheet metal and is spaced from the wall of the-flue by legs 14: secured to the ends 15 of theplate 16. which inlturn i is secured by-rivets vor screws 17,. Theplate 16 has a central opening throughwliich thev shaft projects and a sleeve 18 and a'flan'ge19 serve to. close thiscentral opening, as the shaft 12 is usually square; {in any: event, a

' tight closure .at'this point is desirable.

The shaft is provided with an arm '20 .usually.constructedof a' sheet metal sleeve 21- formed by metal bent to enclose the square shaft 12 and the sleeve lsand clamped by a screw 21 and with its ends 22 embracing the part 23 which is a'stiif metal-plate having a slit 24 wide enough to loosely receive the ringkl'ike bracket 13'. This permitsthe free rotation of the arm and therefor of the damper when the device is unlocked. I

i slit 24.

1 The lever 25 is pivoted at '26 to the arm and the end 27 projects to for1n a handle.

The other end is proportioned and disposed so that it formsacam so thatwhen swung in one direction it will bind the ring-13 between thelever and the inside edgeof the swung the other direction, andfin 1 j the type'shown this other direction is; outwardly, the lever will assume the position than the'edge2l of the lever,jis opposite the ring-like bracket and thearm and consequently the damper, can be any other desired position.

To prevent binding, 1' preferwto put .a

rounded face toward the ring-likebracket when the lever is swung to unlocked j'position, this roundedface being formedin the device illustrated by wi'ngs' 28, these being i I providedusually by bending over a'strip; of' metal to'form' the lever, the'ends of the metal being bent, to provide thewings 28.

The "operation 'of i this device is obvious and it will also be understood that jit can be shown in Eigure 3 in 'whiclifthecam-like or g Y locking end, which" is'closer' to the pivot 26 i to] i freely swung to operated at a height from the groundby a hook or ring on the end of a pole which ring can be placed over'l'the lever 25 "and damper to any adjusted position.

.1 q I if} 1. A damper securing meanszcom iirising a'fiue, i ;a damper int-the flue, includinga' shaftvextending through the wall ofthe flue,

"8. a applied inmoving the lever to its locking or j u'nlocklng posltionor to'swing itto move the.

a ring-like bracket ,en the said wall,v and "anarm on'the shaft-andslidable I loosely on the loracket,-the arm ha in aslit to loosely I receive-the ring-like blajQke-ty and; "a lever the bracket between one edge of the slit and said cam.

pivoted to the arm, the lever having a pr'ov1 jecting end to form a handle'and' having 1 the other end formed into a cam to bindv 1 2. A dampersecuringfdevice comprising;

a ring-like bracket with legs tobe secured to the wallof a flu'efto hold the ring spaced, from the wall, tan. arm adapted to r otate ring otthe bracket, and alever pivoted to the arm at the end thereof and having its outer'end formed into a handle: and itsinner end into 'a cam? In testimony whereof Ialii my slignaturei with thesha ft of a'da'mper', the arm having i a slit toloosely receive the inner edge of the mo it 

